Burner for oil-burning furnaces



July 2, 1929. A. P. HOLDEN ET AL 1.719.608

BURNER FOR OIL BURNING FURNACES Filed Sept. 23 1926 Z5 4 Z Z6 0 O 27 c: I D 37 6 I3 is 5 I hl enfo rS.

Patented July 2, 1929.

anrnun r. HOLDEN annfrnrmrfmonean, or 'ronon'ro, on'ranmcanana.

BURNER FOR OIL-BURNING FURNACES;

Application filed September The principal objects of this invention are to ensure the maintenance of the nozzle and ignition points in the best condition to produce the highest efficiency in the burning of the oil and to devise a structure which will enable the ready cleaning of the burner. and the ignition points without disturbing ad- 'justments.

- A still further object is to devise a structure which is capable of being readily re-- paired without causing material interference with the use of the furnace.

Theprincipal features of the invention consist in the novel construction and arrangement of parts whereby the burner nozzle .is supported upon a hinged structure through which the supplies of oil and compressed air .are directed separately to be united in the burner structure under conditions to ensure the preheating of the air and the thorough atomization of the oil discharged from the nozzle from a common discharge opening.

; -A further important adjustably supporting the ignition apparatus upon the: hinged structure sothat the adjustment thereof will be maintained during 4am manipulation of the hinged memberfor cleaning or inspection purposes.

. In the drawingsyFigure 1 is a front elevational viewof the apparatus as, applied to a furnace door opening.

- Figure 2 is atop plan View of the appara tus.

Figure 3 i's'a side elevational view show ing the nozzle in thenormal operating position. 1

'Figure 4is a side elevational view show-.

ing the nozzle swung e outwardly on its hinged support for inspection or repair purl poses.

Figure 5 is a horizontal sectional detail: through the line 5.5 of Figure 1' showing the oil and air distribution duct connection.

.Figure- 6 is avertical mid-sectional,viewthroughthe nozzle. 1

In the burning ofzoilin domestic furnaces many difliculties arise. through :local conditions ofa-tmosphere, draught, and the type or condition of thefurnace to which the should be ofsuchanature as to enable such feature consists in 23, 1926. Serial No. 137,357.

simplest possible manner and in the least .pos-

sible time and without disturbingadjustments and connections other than those actually required. i

The present invention has been devised to enable these results to be accomplished and the exemplific ationof the invention as herein shown comprises a structure consisting of a plate 1 which takes the place of a firedoor and is secured to the fire door opening of the furnace. A bracket extension 2 extends downwardly from the plate 1 and is provided with a hub 3 having trunnion. extensions from. each .end and on each trunnion extension is arranged "a hub 4 adapted to receive the end of a supply pipe. v

I L connections 5 are .journalledon theoutwardly extending end of. the .trunnion'of packing nuts 6 to form pressure tight joints. Tubes 7 and Bare secured: in the. upper connections of the Ls.5 and curve inwardly atthe upper end and enter a transverse hub 9 arranged upon a burner casting 10. The burner casting is provided with aflange 11 which is secured toa plate =12 whichhas a pair of downwardly extendingv arms" .13 which I rotatably encircle the trunnionson .the ends of the hub'3. It ,willthus be seenthat the tubes 7 and '8,' conducting. air andoil' to the burner, will swing. upon the same centre as does the plate '12 supporting the burner casting. The plate: 12 isprovided with a flange 14 thehub, each being providedwith suitable centre of the plate. 1. Thisflange'is provided with an elongated :portion 15 at the bottom to protect the porcelain 16 of the ignition pointsv 17 against. the intense ,heatjwhich l flows upwardly around the inner side of the firebox'of the furnace. e. f The burner casting=10 which is hollow projects inwardly ,pastvzthe flange Mend its extension15 and isprovided at] its inner end with aburner nozzle,18 which is of: a, Suitable'construction here shown having a-whirl ing spiral member 19 arranged surrounding the oil feed pipe 20. The oil is feddirectly to the-point-of thenozzle through the pi e 20 from a pipe211which-extends "into the packed recess 22 which connects .with [the tube 7; e I V Thetube 8 connects ;with1,the chamber within the I hollow casting 1O and 1 Edirects a-fiow of airthereinto, which .is heated to quite a high temperature by reason of its projecting into the combustion chamber of the furnace. The air thus heated also heats the oil and the two, raised to a high temperature, are projected from the nozzle in a fine spray. The edge of this spray is directed past the ignition points 17 and is ignited thereby and a jet of flame is projected angularly downward from the angularly disposed nozzleinto the tire box of r the furnace.

$uitable clean-out plugs 23 and 24 are arranged in the burner casting to enable the interior of the casting to be thoroughly cleaned from grit of any kind.

Rigidly secured to the hinged plate 12 and extending outwardly at right anglestherefrom are a pair of bars 25 and ar A pivotal latch 29 is mounted between.

the lugs 30 arranged on the upper part of the plate 1. This latch engages the upper edge of the pivotal plate 12 and holds said plate in theclosed position- When it is desired to inspect the nozzle or adjust it or clean it or the spark points, the latch is lifted and the plate 12 is swung outwardly upon the arms 13 as illustrated in Figure 1, thus bringing the nozzle. and the ignition points out clear of the enclosing structure. The pivoting of the feed pipe eliminates the necessity of disconnecting any pipe con- DEC/610118 and enables inspection and cleaning of the nozzle'without altering any adjustments whatever. I

The entire structure is extremely compact and neat in appearance. It is sturdy in its construction and there is nothing that will readily'get out of order.

hat we claim as our invention is:

1. A burner for oil burning furnaces, comq prising a plate adapted to be rigidly secured to the furnace structure and having an opening therethrough and a downwardly extending rigid bracket, 'trunnions horizontally arranged extending from said rigid bracketand having rigid hollow extensions,

supply pipes connected with said hollow eX- tensions, hollow L-fittings rotatably mounted on said trunnion extensions, tubes eX- tendingupwardly from said L-fittings, a

plate having arms pivotally mounted on said trunnions, a burner nozzle rigidly secured to said pivotal plate and extending through the opening in the rigid plate into the interior of the furnace, said tubes being connected to said burner nozzle, and a pair of high tension ignition points adjustably mounted on said pivotal plate and extending therethrough into the interior of the furnace. r

A burner for oil burning furnaces, comprising plate adapted to be rigidly secured to the furnace structure and having an opening therethrough and a downwardly extending rigid bracket, trunnions horizontally-arranged extending from said rigid 1 bracket and having rigid. hollow extensions, Q

supply pipes connected to said hollow extensions, hollow L-littings rotatably mounted on said. trunnion extensions, tubes extending upwardly from said L-iittings, a plate having arms pivotally mounted on said trunnions, a burner nozzle rigidly secured to said pivotal plate and extending through the opening in the rigid plate into the interior of the furnace, said tubes being'connected to said burner nozzle, a bracket slidably mounted, on said pivotal plate and adapted to support an electric transformer, ignition terminals carried by and insulated from said bracket and extending through the pivotal plate into the interior of the furnace, and a flange arranged on said pivotal plate extending inwardly and protecting the insulation of said ignition terminals.

3. In an oil burner for furnaces, the combination with a furnace having a fire door opening, of a metal plate adapted to be rigidly secured to the furnace structure to close said opening and having an opening therethrough, a hub rigid with said rigid plate and spaced directly below the opening therein, a pair of hollow pivot extensionson said hub in axial alignment and having theirinteriors unconnected, a plate pivotally mounted on said hollow pivot extensions, a burner nozzle :arried by said pivotal plate, ignition means carricdby said pivotal plate, said nozzle and ignition means being adapted to extend through the opening in said rigid plate into the furnace interior, an air supply pipe leading to andconducting air under pressure to the interior of one of said hollow pivot ex- "tensions, an oil supply pipe leading to and conducting oil to the other of said hollow extensions, and tubular connections connecting each of said hollow pivot extensions with said burner nozzle.

4. In an oil burner for furnaces, thecombination with a furnace having a fire door opening, of a metal plate adapted "to be rigidly secured to the furnace structure to close said openingand having an opening therethrough, rigid bracket extensions from said rigid plate having a hub east integral with their outer ends, hollow pivot extensions extending axially from opposite ends of said hub, said hollow pivot extensions being each closed at their inner end, a plate having lug extensions encircling said hollow pivot extensions adjacent the hub, an oil nozzlemounted on said pivotal plate, ignition terminals mounted on said pivotal plate directly below said nozzle, said nozzle and ignition terminals being adapted to extend through the opening in said rigid plate into the furnace interior,'separate' oil and air supply pipes leading to said hollow pivot extensions and conducting oil to one of said hollow pivot extensions and air to the other, means for separately conducting oil and air to said burner nozzle through the opening in said rigid plate, andoil and air conducting means connecting the interiors of said hollow pivot extensions with said conducting means.

5. In an oil burner for furnaces, the combination with the fire door opening, of a plate rigidly secured thereover and closing said opening and having an opening therethrough, a bracket member extending rigidly from said plate, a member hinged to said rigid bracket member, a hollow burner casing secured to said hinged member and extending through the opening in said plate into the furnace interior, a pipe connection leading to the interior of said hollow burner casing for conducting air thereto under pressure, a discharge outlet at the inner end of said burner casin an oil nozzle directing oil through said outlet, a pipe connection leading to the oil nozzle and separate means pivot-ally connected with said air and oil nozzle connections for conducting air under pressure and oil to the same independent of the swinging of said hinged member.

ARTHUR P. HOLDEN. PHILIP MORGAN. 

